T06 Understanding and Designing of Switch-Mode Power Electronics Simplified using a Building-Block Approach (assisted by computersimulations)

Ned Mohan, William P. Robbins
Dept. of Electrical and Computer Engineering, Minneapolis;

Tore Undeland, NTNU, Trondheim, Norway and Frede Blaabjerg,
Aalborg University, Denmark

Full day (9 a.m. to 4 p.m.)
Location: Seggau
including sightseeing: Seggau and wine yard

Who Should Attend?

Course Content:

This course is intended for power electronics professionals who never had a formal course in this field but would like to broaden and deepen their understanding. In this course, we will take a designer’s viewpoint of the underlying theory. The course will begin with an introduction to growing applications of power electronics. Then, we will identify a "building block" that is common to switch-mode dc power supplies, UPS and motor drives. It will be shown that on an average basis, we can represent this building block by an ideal transformer. This thoroughly tested approach has several benefits over conventional methods used in textbooks: not only the theoretical basis for all practical converters is discussed in just a matter of hours but we also see the commonality between them. It will be demonstrated that average models speed up simulations by a factor of hundred or more, and by using PSpice, we can easily linearize them for feedback controller design. Simulations will be demonstrated using PSpice™ evaluation Demo version (which can be obtained free-of-charge). Detailed course notes will be provided. Further information is available on http://www.mnpere.com.

  1. Introduction to Power Electronics Applications and Topologies
  2. Fundamentals essential to mastering Power Electronics
    1. Identifying the common building block
    2. Average model of the building block
    3. Synthesis of dc output in dc-dc converters (buck, boost, and buck-boost)
    4. Modeling using PSpice™ and comparison of results between switching models and average models which speed up simulations by a factor of hundred or more
  3. Practical Converters with magnetic transformers used in Switching Power Supplies
    1. Flyback
    2. Forward
    3. Full-Bridge (H-Bridge)
  4. Linearizing switch-mode converters for designing voltage-mode and peak current-mode feedback controllers
    1. Continuous conduction mode
    2. Discontinuous conduction mode
    3. Including parasitic losses
    4. Aid of computer simulations
  5. Soft-Switching in dc-dc converters
    1. Basic Principles of ZVS and ZCS
    2. Practical ZVS Topologies using MOSFETs
    3. Comparison of Soft-Switching Topologies
  6. Power Factor Correction (1-Phase input)
    1. Basic Topology
    2. Controller Design
  7. Synthesis of DC and Sinusoidal AC in Converters for DC and AC Motor Drives and UPS (Uninterruptible Power Supplies)
    1. Using the building block
    2. Input and Output ripple
    3. Modeling and feedback controller design
  8. Discussion of Future Directions in Power Electronics

Biography of Ned Mohan

Dr. Ned Mohan has been with the University of Minnesota since 1976 where he is a professor of electrical and computer engineering and holds Oscar A. Schott Chair in power electronics. He has received the Distinguished Teaching Award from the University of Minnesota.

He is a lead co-author of a widely used textbook on Power Electronics, which has also been translated into several languages (Chinese, Greek, Korean and soon in Turkish). Recently, he has authored a new textbook "Electric Drives: An Integrative Approach", which in six short months subsequent to its publication has been adopted as a textbook at twelve major universities.

Recently, in addition to his research activities, he is developing educational material and laboratories for courses in power electronics and motor drives.

Prof. Mohan is a Fellow of the IEEE.
 

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